Unreal Engine Issues
Unreal Engine Issues
Particle record in the Matinee leads to crash when playing after record.
Tools - Oct 19, 2017Particle record feature in the matinee seems not properly working in the Editor. When trying to play in the matinee with recorded keys, the Engine will crash with Access violation - code c0000005. ...
Control Rig - Undo doesn't function correctly with proxy and multi bone controls
UE - Anim - Rigging - Control Rig - Oct 26, 2025Issue from my Technical Animator where the undo operation in Control Rig doesn't work as expected on Proxy Controls. He has recreated the issue using the "Control Rig Samples Pack" and recorded a vi ...
Adding to Struct causes 'Inappropriate Outermost' warnings
UE - Gameplay - Blueprint - Jun 2, 2015Adding to Struct causes 'Inappropriate Outermost' warnings to be spammed to the Output Log ...
Default subobjects do not get PostLoad called
UE - Gameplay - Components - Nov 3, 2016PostLoad function is not called for blueprint components added through code. Regression: Yes In 4.12.5 (CL 3039270) code components do have PostLoad called if other components are not added throug ...
Override Attenuation Can't be Unchecked When Audio Component Added to Blueprint and Blueprint Attached to Actor
UE - Audio - Dec 20, 2017Checking Override Attenuation in Details < Audio Component < Attenuation disables settings that further adjust the Attenuation. Such as: Attenuation Air Absorption, Attenuation Listener Focus, Atte ...
“Receives Decals” is not respected on Procedural Mesh Component
UE - Graphics Features - Oct 14, 2022(Enduring Games) I investigated it and found that the following primitive data flag test in BasePassPixelShader.usf fails: (GetPrimitiveData(MaterialParameters).Flags & PRIMITIVE_SCENE_DATA_FLAG_DE ...
When a Niagara System has SimTarget set to GPUCompute Sim, CameraQuery is only returning data from the Player0 camera, ignoring the PlayerControllerIndex.
UE - Niagara - Nov 8, 2024When a Niagara System has SimTarget set to GPUCompute Sim, CameraQuery is only returning data from the Player0 camera, regardless of PlayerControllerIndex. The expected behavior would be to have the ...
Lack of multi-bounce when using software traced lumen radiosity
UE - Graphics Features - Lumen - Apr 4, 2025Certain Lumen Hardware Ray Tracing CVars, when disabled in isolation, will not fall back to tracing the Global Distance Field, because the Global Distance Field is still disabled. The function "Lum ...
Cannot paint landscape layers onto tiled landscapes
UE - LD & Modeling - Terrain - Landscape - Jun 30, 2015paint layers do not take effect on all tiled layers that have a material incorporated if a user attempts to paint on them from the persistent level. ...
Changing screen percentage while in VR Preview will change screen coords for post process shaders
UE - Platform - XR - Jan 30, 2015If a post process volume is set to use a material shader, reducing the screen percentage while in VR Preview will shift the coordinates left/right. ...